Determination of the Overlapping Area of Patellofemoral and Tibiofemoral Joint Sliding above the Femoral Condylar Facet and the Biomechanical Property of the Area
- VernacularTitle:股骨髁髌股、胫股关节运动重叠接触区域及其生物力学测定
- Author:
Mingguang FENG
;
Haishan WU
;
Changming XU
- Publication Type:Journal Article
- Keywords:
s femoral condyle,patellofemoral joint,tibiofemoral joint, contact area, biomechanical property
- From:
Chinese Journal of Sports Medicine
2003;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To determine the overlapping area of the femoral condyle facet on which the patellofemoral and tibiofemoral joint surfaces move and to measure the pressures on such area in order to better design the length of femoral trochlea prosthesis in patellofemoral arthroplasty. Methods: Eight fresh cadaver knees were mounted on Instron 8501 biomechanics tester,and simulated physiologically weight-bearing situation of knee from standing to flexion position. Such overlapping area was drawed up with stain method and the contact pressures were measured with Fuji pressure film. Results: There existed an overlapping contact area on the femoral condyle facet within the patellofemoral contact area when knee flexion was 75? or larger. The tibiofemoral contact pressure was higher than the patellofemoral pressure in the area. Conclusion: The femoral trocher prosthesis should cover the whole contact area of patellofemoral joint.
